ID: 2457

AQSQID: 401090097

Site Name: Near Road Okc

Added: April 21, 2020, 6:24 p.m.

Updated: April 10, 2021, 6:43 p.m.

Location: Oklahoma City (Meridian Ave Corridor), OK

Reporting: True, Located: True

Current AQI: 25.0

Oklahoma City (Meridian Ave Corridor) OK, US: 35.502968, -97.577674

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 10, 2021, 5 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 15.0 μg/m3 (14) 5.8 μg/m3 (25) 25.0
 
April 10, 2021, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 12.0 μg/m3 (12) 5.1 μg/m3 (22) 22.0
 
April 10, 2021, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 11.0 μg/m3 (11) 4.3 μg/m3 (18) 18.0
 
April 10, 2021, 2 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 9.0 μg/m3 (9) 3.7 μg/m3 (16) 16.0
 
April 10, 2021, 1 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 8.0 μg/m3 (8) 3.1 μg/m3 (13) 13.0
 
April 10, 2021, noon 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 5.0 μg/m3 (5) 2.7 μg/m3 (12) 12.0
 
April 10, 2021, 11 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 6.0 μg/m3 (6) 2.5 μg/m3 (11) 11.0
 
April 10, 2021, 10 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 6.0 μg/m3 (6) 3.0 μg/m3 (13) 13.0
 
April 10, 2021, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 7.0 μg/m3 (7) 3.4 μg/m3 (15) 15.0
 
April 10, 2021, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 7.0 μg/m3 (7) 3.5 μg/m3 (15) 15.0
 
April 10, 2021, 7 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 8.0 μg/m3 (8) 3.7 μg/m3 (16) 16.0
 
April 10, 2021, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 9.0 μg/m3 (9) 4.0 μg/m3 (17) 17.0
 
April 10, 2021, 5 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 9.0 μg/m3 (9) 4.3 μg/m3 (18) 18.0
 
April 10, 2021, 4 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 12.0 μg/m3 (12) 4.5 μg/m3 (19) 19.0
 
April 10, 2021, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 14.0 μg/m3 (13) 4.8 μg/m3 (20) 20.0
 
April 10, 2021, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 19.0 μg/m3 (18) 5.8 μg/m3 (25) 25.0
 
April 10, 2021, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 31.0 μg/m3 (29) 6.8 μg/m3 (29) 29.0
 
April 10, 2021, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 60.0 μg/m3 (54) 9.4 μg/m3 (40) 54.0
 
April 9, 2021, 11 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (5) 56.0 μg/m3 (52) 14.6 μg/m3 (57) 57.0
 
April 9, 2021, 10 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.5 ppb (6) 45.0 μg/m3 (42) 23.3 μg/m3 (75) 75.0
 
April 9, 2021, 9 p.m. 7.0 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.5 ppb (6) 42.0 μg/m3 (39) 22.9 μg/m3 (74) 74.0
 
April 9, 2021, 8 p.m. 43.0 ppb (41) 24.0 ppb (23) N/A 19.0 ppb (18) N/A N/A N/A 0.9 ppb (11) 50.0 μg/m3 (47) 23.9 μg/m3 (76) 76.0
 
April 9, 2021, 7 p.m. 56.0 ppb (54) 35.0 ppb (34) N/A 21.0 ppb (20) N/A N/A N/A 1.0 ppb (12) 58.0 μg/m3 (53) 24.9 μg/m3 (78) 78.0
 
April 9, 2021, 6 p.m. 47.0 ppb (45) 29.0 ppb (28) N/A 17.0 ppb (17) N/A N/A N/A 0.9 ppb (11) 51.0 μg/m3 (48) 24.6 μg/m3 (78) 78.0
 
April 9, 2021, 5 p.m. 51.0 ppb (49) 32.0 ppb (31) N/A 19.0 ppb (18) N/A N/A N/A 0.9 ppb (11) 52.0 μg/m3 (49) 24.3 μg/m3 (77) 77.0
 
April 9, 2021, 4 p.m. 38.0 ppb (36) 25.0 ppb (24) N/A 12.0 ppb (12) N/A N/A N/A N/A 55.0 μg/m3 (51) 23.6 μg/m3 (76) 76.0
 
April 9, 2021, 3 p.m. 38.0 ppb (36) 25.0 ppb (24) N/A 12.0 ppb (12) N/A N/A N/A 0.7 ppb (8) 48.0 μg/m3 (45) 21.9 μg/m3 (72) 72.0
 
April 9, 2021, 2 p.m. 42.0 ppb (40) 26.0 ppb (25) N/A 15.0 ppb (15) N/A N/A N/A 0.8 ppb (10) 44.0 μg/m3 (41) 20.6 μg/m3 (69) 69.0
 
April 9, 2021, 1 p.m. 52.0 ppb (50) 27.0 ppb (26) N/A 24.0 ppb (23) N/A N/A N/A 0.9 ppb (11) 42.0 μg/m3 (39) 17.9 μg/m3 (64) 64.0
 
April 9, 2021, noon 55.0 ppb (53) 27.0 ppb (26) N/A 27.0 ppb (26) N/A N/A N/A 0.9 ppb (11) 38.0 μg/m3 (36) 14.5 μg/m3 (57) 57.0
 
April 9, 2021, 11 a.m. 43.0 ppb (41) 20.0 ppb (19) N/A 23.0 ppb (22) N/A N/A N/A 0.8 ppb (10) 41.0 μg/m3 (38) 12.9 μg/m3 (53) 53.0
 
April 9, 2021, 10 a.m. 37.0 ppb (35) 13.0 ppb (13) N/A 24.0 ppb (23) N/A N/A N/A 0.7 ppb (8) 37.0 μg/m3 (35) 10.9 μg/m3 (46) 46.0
 
April 9, 2021, 9 a.m. 31.0 ppb (30) 8.0 ppb (8) N/A 22.0 ppb (21) N/A N/A N/A 0.6 ppb (7) 36.0 μg/m3 (34) 9.2 μg/m3 (39) 39.0
 
April 9, 2021, 8 a.m. 17.0 ppb (17) 4.0 ppb (4) N/A 12.0 ppb (12) N/A N/A N/A 0.5 ppb (6) 32.0 μg/m3 (30) 8.3 μg/m3 (35) 35.0
 
April 9, 2021, 7 a.m. 13.0 ppb (13) 1.0 ppb (1) N/A 11.0 ppb (11) N/A N/A N/A 0.5 ppb (6) 29.0 μg/m3 (27) 7.5 μg/m3 (32) 32.0
 
April 9, 2021, 6 a.m. 16.0 ppb (16) 1.0 ppb (1) N/A 14.0 ppb (14) N/A N/A N/A 0.5 ppb (6) 34.0 μg/m3 (32) 9.1 μg/m3 (38) 38.0
 
April 9, 2021, 5 a.m. 23.0 ppb (22) 4.0 ppb (4) N/A 18.0 ppb (17) N/A N/A N/A 0.5 ppb (6) 40.0 μg/m3 (38) 11.6 μg/m3 (49) 49.0
 
April 9, 2021, 4 a.m. 38.0 ppb (36) 10.0 ppb (10) N/A 27.0 ppb (26) N/A N/A N/A 0.7 ppb (8) 43.0 μg/m3 (40) 11.9 μg/m3 (50) 50.0
 
April 9, 2021, 3 a.m. 9.0 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.4 ppb (5) 33.0 μg/m3 (31) 7.7 μg/m3 (33) 33.0
 
April 9, 2021, 2 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (5) 33.0 μg/m3 (31) 6.6 μg/m3 (28) 31.0
 
April 9, 2021, 1 a.m. 26.0 ppb (25) 6.0 ppb (6) N/A 19.0 ppb (18) N/A N/A N/A 0.6 ppb (7) 45.0 μg/m3 (42) 7.9 μg/m3 (33) 42.0
 
April 9, 2021, midnight 9.0 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.4 ppb (5) 31.0 μg/m3 (29) 6.4 μg/m3 (27) 29.0
 
April 8, 2021, 11 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (5) 29.0 μg/m3 (27) 6.5 μg/m3 (28) 28.0
 
April 8, 2021, 10 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (4) 26.0 μg/m3 (25) 6.3 μg/m3 (27) 27.0
 
April 8, 2021, 9 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 22.0 μg/m3 (21) 5.7 μg/m3 (24) 24.0
 
April 8, 2021, 8 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 23.0 μg/m3 (22) 5.7 μg/m3 (24) 24.0
 
April 8, 2021, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 22.0 μg/m3 (21) 5.7 μg/m3 (24) 24.0
 
April 8, 2021, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 21.0 μg/m3 (20) 5.4 μg/m3 (23) 23.0
 
April 8, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 19.0 μg/m3 (18) 5.2 μg/m3 (22) 22.0
 
April 8, 2021, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 28.0 μg/m3 (26) 5.8 μg/m3 (25) 26.0
 
April 8, 2021, 3 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 20.0 μg/m3 (19) 5.5 μg/m3 (23) 23.0
 
April 8, 2021, 2 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (4) 27.0 μg/m3 (25) 6.2 μg/m3 (26) 26.0
 
April 8, 2021, 1 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (5) 20.0 μg/m3 (19) 5.9 μg/m3 (25) 25.0
 
April 8, 2021, noon 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (5) 15.0 μg/m3 (14) 5.5 μg/m3 (23) 23.0
 
April 8, 2021, 11 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (4) 13.0 μg/m3 (13) 5.3 μg/m3 (23) 23.0
 
April 8, 2021, 10 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (4) 13.0 μg/m3 (13) 5.0 μg/m3 (21) 21.0
 
April 8, 2021, 9 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (4) 14.0 μg/m3 (13) 4.8 μg/m3 (20) 20.0
 
April 8, 2021, 8 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (4) 13.0 μg/m3 (13) 4.8 μg/m3 (20) 20.0
 
April 8, 2021, 7 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 13.0 μg/m3 (13) 5.1 μg/m3 (22) 22.0
 
April 8, 2021, 6 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 12.0 μg/m3 (12) 4.8 μg/m3 (20) 20.0
 
April 8, 2021, 5 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 12.0 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
April 8, 2021, 4 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 15.0 μg/m3 (14) 5.6 μg/m3 (24) 24.0
 
April 8, 2021, 3 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 17.0 μg/m3 (16) 5.4 μg/m3 (23) 23.0
 
April 8, 2021, 2 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (5) 21.0 μg/m3 (20) 6.3 μg/m3 (27) 27.0
 
April 8, 2021, 1 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (5) 20.0 μg/m3 (19) 5.6 μg/m3 (24) 24.0
 
April 8, 2021, midnight 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 13.0 μg/m3 (13) 4.3 μg/m3 (18) 18.0
 
April 7, 2021, 11 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 14.0 μg/m3 (13) 3.7 μg/m3 (16) 16.0
 
April 7, 2021, 10 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 14.0 μg/m3 (13) 3.4 μg/m3 (15) 15.0
 
April 7, 2021, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 13.0 μg/m3 (13) 3.4 μg/m3 (15) 15.0
 
April 7, 2021, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 17.0 μg/m3 (16) 3.4 μg/m3 (15) 16.0
 
April 7, 2021, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 15.0 μg/m3 (14) 2.6 μg/m3 (11) 14.0
 
April 7, 2021, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 15.0 μg/m3 (14) 2.5 μg/m3 (11) 14.0
 
April 7, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 19.0 μg/m3 (18) 3.3 μg/m3 (14) 18.0
 
April 7, 2021, 4 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 20.0 μg/m3 (19) 3.2 μg/m3 (14) 19.0
 
April 7, 2021, 3 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 18.0 μg/m3 (17) 3.4 μg/m3 (15) 17.0
 
April 7, 2021, 2 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 15.0 μg/m3 (14) 3.2 μg/m3 (14) 14.0
 
April 7, 2021, 1 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 15.0 μg/m3 (14) 3.3 μg/m3 (14) 14.0
 
April 7, 2021, noon 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 18.0 μg/m3 (17) 3.6 μg/m3 (16) 17.0
 
April 7, 2021, 11 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 24.0 μg/m3 (23) 4.7 μg/m3 (20) 23.0
 
April 7, 2021, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 31.0 μg/m3 (29) 6.6 μg/m3 (28) 29.0
 
April 7, 2021, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) 42.0 μg/m3 (39) 9.5 μg/m3 (40) 40.0
 
April 7, 2021, 8 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (5) 27.0 μg/m3 (25) 11.7 μg/m3 (49) 49.0
 
April 7, 2021, 7 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (5) 22.0 μg/m3 (21) 11.5 μg/m3 (48) 48.0
 
April 7, 2021, 6 a.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (5) 21.0 μg/m3 (20) 10.3 μg/m3 (43) 43.0
 
April 7, 2021, 5 a.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.5 ppb (6) 20.0 μg/m3 (19) 9.8 μg/m3 (41) 41.0
 
April 7, 2021, 4 a.m. 8.0 ppb (8) 5.0 ppb (5) N/A 3.0 ppb (3) N/A N/A N/A 0.5 ppb (6) 23.0 μg/m3 (22) 9.6 μg/m3 (40) 40.0
 
April 7, 2021, 3 a.m. 10.0 ppb (10) 5.0 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.5 ppb (6) 22.0 μg/m3 (21) 10.4 μg/m3 (44) 44.0
 
April 7, 2021, 2 a.m. 14.0 ppb (14) 7.0 ppb (7) N/A 6.0 ppb (6) N/A N/A N/A 0.6 ppb (7) 28.0 μg/m3 (26) 11.2 μg/m3 (47) 47.0
 
April 7, 2021, 1 a.m. 16.0 ppb (16) 8.0 ppb (8) N/A 7.0 ppb (7) N/A N/A N/A 0.7 ppb (8) 31.0 μg/m3 (29) 11.1 μg/m3 (47) 47.0
 
April 7, 2021, midnight 21.0 ppb (20) 12.0 ppb (12) N/A 9.0 ppb (9) N/A N/A N/A 0.7 ppb (8) 33.0 μg/m3 (31) 11.3 μg/m3 (48) 48.0
 
April 6, 2021, 11 p.m. 31.0 ppb (30) 18.0 ppb (17) N/A 12.0 ppb (12) N/A N/A N/A 0.8 ppb (10) 38.0 μg/m3 (36) 12.5 μg/m3 (52) 52.0
 
April 6, 2021, 10 p.m. 33.0 ppb (32) 19.0 ppb (18) N/A 13.0 ppb (13) N/A N/A N/A 0.7 ppb (8) 41.0 μg/m3 (38) 12.2 μg/m3 (52) 52.0
 
April 6, 2021, 9 p.m. 34.0 ppb (33) 21.0 ppb (20) N/A 12.0 ppb (12) N/A N/A N/A 0.8 ppb (10) 38.0 μg/m3 (36) 11.3 μg/m3 (48) 48.0
 
April 6, 2021, 8 p.m. 36.0 ppb (34) 23.0 ppb (22) N/A 12.0 ppb (12) N/A N/A N/A 0.8 ppb (10) 33.0 μg/m3 (31) 10.6 μg/m3 (45) 45.0
 
April 6, 2021, 7 p.m. 34.0 ppb (33) 20.0 ppb (19) N/A 13.0 ppb (13) N/A N/A N/A 0.7 ppb (8) 32.0 μg/m3 (30) 10.1 μg/m3 (43) 43.0
 
April 6, 2021, 6 p.m. 29.0 ppb (28) 18.0 ppb (17) N/A 10.0 ppb (10) N/A N/A N/A 0.6 ppb (7) 29.0 μg/m3 (27) 9.5 μg/m3 (40) 40.0
 
April 6, 2021, 5 p.m. 28.0 ppb (27) 19.0 ppb (18) N/A 8.0 ppb (8) N/A N/A N/A 0.7 ppb (8) 31.0 μg/m3 (29) 9.0 μg/m3 (38) 38.0
 
April 6, 2021, 4 p.m. 33.0 ppb (32) 20.0 ppb (19) N/A 13.0 ppb (13) N/A N/A N/A 0.7 ppb (8) 29.0 μg/m3 (27) 8.5 μg/m3 (36) 36.0
 
April 6, 2021, 3 p.m. 38.0 ppb (36) 22.0 ppb (21) N/A 15.0 ppb (15) N/A N/A N/A 0.7 ppb (8) 26.0 μg/m3 (25) 8.4 μg/m3 (36) 36.0
 
April 6, 2021, 2 p.m. 41.0 ppb (39) 24.0 ppb (23) N/A 17.0 ppb (17) N/A N/A N/A 0.7 ppb (8) 25.0 μg/m3 (24) 8.5 μg/m3 (36) 39.0
 
April 6, 2021, 1 p.m. 41.0 ppb (39) 25.0 ppb (24) N/A 15.0 ppb (15) N/A N/A N/A 0.8 ppb (10) 22.0 μg/m3 (21) 8.6 μg/m3 (36) 39.0
 
April 6, 2021, noon 42.0 ppb (40) 26.0 ppb (25) N/A 16.0 ppb (16) N/A N/A N/A 0.8 ppb (10) 24.0 μg/m3 (23) 9.0 μg/m3 (38) 40.0
 
April 6, 2021, 11 a.m. 24.0 ppb (23) 15.0 ppb (15) N/A 9.0 ppb (9) N/A N/A N/A 0.7 ppb (8) 18.0 μg/m3 (17) 7.8 μg/m3 (33) 33.0
 
April 6, 2021, 10 a.m. 16.0 ppb (16) 7.0 ppb (7) N/A 8.0 ppb (8) N/A N/A N/A 0.6 ppb (7) 16.0 μg/m3 (15) 7.6 μg/m3 (32) 32.0
 
April 6, 2021, 9 a.m. 10.0 ppb (10) 4.0 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.5 ppb (6) 15.0 μg/m3 (14) 7.5 μg/m3 (32) 32.0
 
April 6, 2021, 8 a.m. 8.0 ppb (8) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (5) 15.0 μg/m3 (14) 7.6 μg/m3 (32) 32.0
 
April 6, 2021, 7 a.m. 8.0 ppb (8) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (5) 16.0 μg/m3 (15) 7.7 μg/m3 (33) 33.0
 
April 6, 2021, 6 a.m. 7.0 ppb (7) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (5) 17.0 μg/m3 (16) 8.1 μg/m3 (34) 34.0
 
April 6, 2021, 5 a.m. 8.0 ppb (8) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.5 ppb (6) 19.0 μg/m3 (18) 8.4 μg/m3 (36) 36.0
 
April 6, 2021, 4 a.m. 9.0 ppb (9) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.5 ppb (6) 20.0 μg/m3 (19) 8.3 μg/m3 (35) 35.0
 
April 6, 2021, 3 a.m. 14.0 ppb (14) 6.0 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A 0.6 ppb (7) 22.0 μg/m3 (21) 8.8 μg/m3 (37) 37.0
 
April 6, 2021, 2 a.m. 19.0 ppb (18) 8.0 ppb (8) N/A 10.0 ppb (10) N/A N/A N/A 0.6 ppb (7) 25.0 μg/m3 (24) 8.7 μg/m3 (37) 37.0
 
April 6, 2021, 1 a.m. 27.0 ppb (26) 13.0 ppb (13) N/A 13.0 ppb (13) N/A N/A N/A 0.7 ppb (8) 26.0 μg/m3 (25) 8.7 μg/m3 (37) 37.0
 
April 6, 2021, midnight 32.0 ppb (31) 16.0 ppb (16) N/A 15.0 ppb (15) N/A N/A N/A 0.7 ppb (8) 27.0 μg/m3 (25) 8.5 μg/m3 (36) 36.0
 
April 5, 2021, 11 p.m. 35.0 ppb (34) 18.0 ppb (17) N/A 17.0 ppb (17) N/A N/A N/A 0.9 ppb (11) 29.0 μg/m3 (27) 8.6 μg/m3 (36) 36.0
 
April 5, 2021, 10 p.m. 24.0 ppb (23) 13.0 ppb (13) N/A 11.0 ppb (11) N/A N/A N/A 0.6 ppb (7) 24.0 μg/m3 (23) 8.1 μg/m3 (34) 34.0
 
April 5, 2021, 9 p.m. 40.0 ppb (38) 23.0 ppb (22) N/A 17.0 ppb (17) N/A N/A N/A 0.8 ppb (10) 42.0 μg/m3 (39) 9.9 μg/m3 (42) 42.0
 
April 5, 2021, 8 p.m. 35.0 ppb (34) 20.0 ppb (19) N/A 15.0 ppb (15) N/A N/A N/A 0.7 ppb (8) 33.0 μg/m3 (31) 9.4 μg/m3 (40) 40.0
 
April 5, 2021, 7 p.m. 30.0 ppb (29) 16.0 ppb (16) N/A 13.0 ppb (13) N/A N/A N/A 0.6 ppb (7) 32.0 μg/m3 (30) 8.9 μg/m3 (38) 38.0
 
April 5, 2021, 6 p.m. 14.0 ppb (14) 6.0 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A 0.5 ppb (6) 31.0 μg/m3 (29) 8.5 μg/m3 (36) 36.0
 
April 5, 2021, 5 p.m. 10.0 ppb (10) 5.0 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.5 ppb (6) 31.0 μg/m3 (29) 8.4 μg/m3 (36) 36.0
 
April 5, 2021, 4 p.m. 23.0 ppb (22) 12.0 ppb (12) N/A 11.0 ppb (11) N/A N/A N/A 0.6 ppb (7) 31.0 μg/m3 (29) 8.7 μg/m3 (37) 37.0
 
April 5, 2021, 3 p.m. 32.0 ppb (31) 18.0 ppb (17) N/A 13.0 ppb (13) N/A N/A N/A 0.6 ppb (7) 33.0 μg/m3 (31) 9.6 μg/m3 (40) 40.0
 
April 5, 2021, 2 p.m. 36.0 ppb (34) 20.0 ppb (19) N/A 16.0 ppb (16) N/A N/A N/A 0.7 ppb (8) 34.0 μg/m3 (32) 9.9 μg/m3 (42) 42.0
 
April 5, 2021, 1 p.m. 52.0 ppb (50) 32.0 ppb (31) N/A 20.0 ppb (19) N/A N/A N/A 0.8 ppb (10) 33.0 μg/m3 (31) 10.0 μg/m3 (42) 50.0
 
April 5, 2021, noon 25.0 ppb (24) 11.0 ppb (11) N/A 13.0 ppb (13) N/A N/A N/A 0.6 ppb (7) 19.0 μg/m3 (18) 8.0 μg/m3 (34) 34.0
 
April 5, 2021, 11 a.m. 23.0 ppb (22) 10.0 ppb (10) N/A 13.0 ppb (13) N/A N/A N/A 0.7 ppb (8) 20.0 μg/m3 (19) 7.8 μg/m3 (33) 33.0
 
April 5, 2021, 10 a.m. 14.0 ppb (14) 4.0 ppb (4) N/A 10.0 ppb (10) N/A N/A N/A 0.5 ppb (6) 20.0 μg/m3 (19) 8.3 μg/m3 (35) 35.0
 
April 5, 2021, 9 a.m. 19.0 ppb (18) 5.0 ppb (5) N/A 13.0 ppb (13) N/A N/A N/A 0.5 ppb (6) 20.0 μg/m3 (19) 8.9 μg/m3 (38) 38.0
 
April 5, 2021, 8 a.m. 11.0 ppb (11) 3.0 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A 0.5 ppb (6) 19.0 μg/m3 (18) 8.8 μg/m3 (37) 37.0
 
April 5, 2021, 7 a.m. 9.0 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.5 ppb (6) 19.0 μg/m3 (18) 9.1 μg/m3 (38) 38.0
 
April 5, 2021, 6 a.m. 9.0 ppb (9) 1.0 ppb (1) N/A 7.0 ppb (7) N/A N/A N/A 0.5 ppb (6) 19.0 μg/m3 (18) 9.1 μg/m3 (38) 38.0
 
April 5, 2021, 5 a.m. 10.0 ppb (10) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.5 ppb (6) 18.0 μg/m3 (17) 8.1 μg/m3 (34) 34.0
 
April 5, 2021, 4 a.m. 16.0 ppb (16) 6.0 ppb (6) N/A 10.0 ppb (10) N/A N/A N/A 0.6 ppb (7) 21.0 μg/m3 (20) 8.0 μg/m3 (34) 34.0
 
April 5, 2021, 3 a.m. 23.0 ppb (22) 8.0 ppb (8) N/A 15.0 ppb (15) N/A N/A N/A 0.7 ppb (8) 22.0 μg/m3 (21) 8.9 μg/m3 (38) 38.0
 
April 5, 2021, 2 a.m. 28.0 ppb (27) 12.0 ppb (12) N/A 16.0 ppb (16) N/A N/A N/A 0.7 ppb (8) 28.0 μg/m3 (26) 10.1 μg/m3 (43) 43.0
 
April 5, 2021, 1 a.m. 29.0 ppb (28) 12.0 ppb (12) N/A 16.0 ppb (16) N/A N/A N/A 0.8 ppb (10) 32.0 μg/m3 (30) 8.7 μg/m3 (37) 37.0
 
April 5, 2021, midnight 25.0 ppb (24) 12.0 ppb (12) N/A 13.0 ppb (13) N/A N/A N/A 0.8 ppb (10) 20.0 μg/m3 (19) 7.2 μg/m3 (31) 31.0
 
April 4, 2021, 11 p.m. 24.0 ppb (23) 12.0 ppb (12) N/A 12.0 ppb (12) N/A N/A N/A 0.7 ppb (8) 24.0 μg/m3 (23) 8.0 μg/m3 (34) 34.0
 
April 4, 2021, 10 p.m. 15.0 ppb (15) 6.0 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A 0.6 ppb (7) 25.0 μg/m3 (24) 8.6 μg/m3 (36) 36.0
 
April 4, 2021, 9 p.m. 17.0 ppb (17) 8.0 ppb (8) N/A 8.0 ppb (8) N/A N/A N/A 0.7 ppb (8) 21.0 μg/m3 (20) 8.2 μg/m3 (35) 35.0
 
April 4, 2021, 8 p.m. 19.0 ppb (18) 9.0 ppb (9) N/A 10.0 ppb (10) N/A N/A N/A 0.7 ppb (8) 21.0 μg/m3 (20) 8.1 μg/m3 (34) 34.0
 
April 4, 2021, 7 p.m. 13.0 ppb (13) 6.0 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A 0.5 ppb (6) 19.0 μg/m3 (18) 7.5 μg/m3 (32) 32.0
 
April 4, 2021, 6 p.m. 11.0 ppb (11) 5.0 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.6 ppb (7) 19.0 μg/m3 (18) 7.6 μg/m3 (32) 32.0
 
April 4, 2021, 5 p.m. 11.0 ppb (11) 5.0 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.5 ppb (6) 20.0 μg/m3 (19) 7.6 μg/m3 (32) 32.0
 
April 4, 2021, 4 p.m. 9.0 ppb (9) 4.0 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.5 ppb (6) 21.0 μg/m3 (20) 7.6 μg/m3 (32) 32.0
 
April 4, 2021, 3 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (5) 18.0 μg/m3 (17) 7.6 μg/m3 (32) 32.0
 
April 4, 2021, 2 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (5) 20.0 μg/m3 (19) 9.3 μg/m3 (39) 39.0
 
April 4, 2021, 1 p.m. 13.0 ppb (13) 3.0 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.4 ppb (5) 26.0 μg/m3 (25) 13.7 μg/m3 (55) 55.0
 
April 4, 2021, noon 13.0 ppb (13) 2.0 ppb (2) N/A 10.0 ppb (10) N/A N/A N/A 0.4 ppb (5) 24.0 μg/m3 (23) 15.3 μg/m3 (58) 58.0
 
April 4, 2021, 11 a.m. 9.0 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.4 ppb (5) 23.0 μg/m3 (22) 13.1 μg/m3 (54) 54.0
 
April 4, 2021, 10 a.m. 9.0 ppb (9) 0.0 ppb (0) N/A 8.0 ppb (8) N/A N/A N/A 0.4 ppb (5) 21.0 μg/m3 (20) 12.0 μg/m3 (50) 50.0
 
April 4, 2021, 9 a.m. 8.0 ppb (8) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A N/A 0.4 ppb (5) 20.0 μg/m3 (19) 10.5 μg/m3 (44) 44.0
 
April 4, 2021, 8 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (5) 21.0 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
April 4, 2021, 7 a.m. 14.0 ppb (14) 2.0 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.5 ppb (6) 23.0 μg/m3 (22) 10.9 μg/m3 (46) 46.0
 
April 4, 2021, 6 a.m. 12.0 ppb (12) 2.0 ppb (2) N/A 10.0 ppb (10) N/A N/A N/A 0.5 ppb (6) 25.0 μg/m3 (24) 11.0 μg/m3 (46) 46.0
 
April 4, 2021, 5 a.m. 21.0 ppb (20) 5.0 ppb (5) N/A 15.0 ppb (15) N/A N/A N/A 0.7 ppb (8) 25.0 μg/m3 (24) 11.2 μg/m3 (47) 47.0
 
April 4, 2021, 4 a.m. 24.0 ppb (23) 9.0 ppb (9) N/A 15.0 ppb (15) N/A N/A N/A 0.7 ppb (8) 27.0 μg/m3 (25) 11.6 μg/m3 (49) 49.0
 
April 4, 2021, 3 a.m. 23.0 ppb (22) 8.0 ppb (8) N/A 14.0 ppb (14) N/A N/A N/A 0.7 ppb (8) 31.0 μg/m3 (29) 12.4 μg/m3 (52) 52.0
 
April 4, 2021, 2 a.m. 33.0 ppb (32) 14.0 ppb (14) N/A 18.0 ppb (17) N/A N/A N/A 0.8 ppb (10) 33.0 μg/m3 (31) 13.4 μg/m3 (54) 54.0
 
April 4, 2021, 1 a.m. 48.0 ppb (46) 19.0 ppb (18) N/A 29.0 ppb (28) N/A N/A N/A 1.0 ppb (12) 38.0 μg/m3 (36) 12.1 μg/m3 (51) 51.0
 
April 4, 2021, midnight 41.0 ppb (39) 15.0 ppb (15) N/A 26.0 ppb (25) N/A N/A N/A 0.9 ppb (11) 34.0 μg/m3 (32) 11.0 μg/m3 (46) 46.0
 
April 3, 2021, 11 p.m. 27.0 ppb (26) 10.0 ppb (10) N/A 16.0 ppb (16) N/A N/A N/A 0.7 ppb (8) 30.0 μg/m3 (28) 10.1 μg/m3 (43) 43.0
 
April 3, 2021, 10 p.m. 40.0 ppb (38) 19.0 ppb (18) N/A 21.0 ppb (20) N/A N/A N/A 0.9 ppb (11) 34.0 μg/m3 (32) 10.5 μg/m3 (44) 44.0
 
April 3, 2021, 9 p.m. 20.0 ppb (19) 8.0 ppb (8) N/A 11.0 ppb (11) N/A N/A N/A 0.6 ppb (7) 31.0 μg/m3 (29) 9.8 μg/m3 (41) 41.0
 
April 3, 2021, 8 p.m. 19.0 ppb (18) 8.0 ppb (8) N/A 10.0 ppb (10) N/A N/A N/A 0.6 ppb (7) 31.0 μg/m3 (29) 10.1 μg/m3 (43) 43.0
 
April 3, 2021, 7 p.m. 27.0 ppb (26) 13.0 ppb (13) N/A 13.0 ppb (13) N/A N/A N/A 0.7 ppb (8) 36.0 μg/m3 (34) 10.4 μg/m3 (44) 44.0
 
April 3, 2021, 6 p.m. 26.0 ppb (25) 12.0 ppb (12) N/A 14.0 ppb (14) N/A N/A N/A 0.7 ppb (8) 32.0 μg/m3 (30) 10.3 μg/m3 (43) 43.0